In this courtroom sketch, U.S. Army Maj. Nidal Malik Hasan is shown as the guilty verdict is read at his court martial, Friday, Aug. 23, 2013, in Fort Hood, Texas.

Written by

Sharon Jayson
USA TODAY

Jurors in the trial of Maj. Nidal Hasan, the Army psychiatrist found guilty last week of a killing rampage at Fort Hood four years ago, have begun hearing testimony Monday from the 16 prosecution witnesses during the sentencing phase.

Staff Sgt. Patrick Zeigler, shot in the head, shoulder, arm and hip, said he's left with permanent brain injuries from the Nov. 5, 2009, shooting that will force him to take a medical discharge.

"That day, I had emergency brain surgery on right side of my head, which removed approximately 20% of my brain. I was expected to die or remain in a vegetative state the rest ...